Sunday

April 20, 2014

April 20, 2014

Total # Posts: 470

**math**

Take west to be the positive direction. The height of a sloped roof above the place where I stand is h = 12 feet (see the figure below). If I move 3 feet west, the height is 10 feet. If I move 2 additional feet west, what is the height of the roof above the place where I stand?

**physic angular momentum and torque**

Calculate the mass m needed in order to suspend the leg shown in the figure(Figure 1) . Assume the leg (with cast) has a mass of 15.5kg , and its CG is 35.5cm from the hip joint; the sling is 76.5cm from the hip joint.

**Science**

1. Which of the following is an example of matter? (1 point) leaves shadows light from the sun sound 2. Which of the following is an example of a chemical property of matter? (1 point) ability to melt ability to freeze ability to ...

**Math xc**

I've tried and tried to answer this question..I just hate math and math hates me. So let's get to the point why you are all here 1:Find the unit price for each option below. Round to the nearest cent when necessary. Indicate which option is a better buy. Option 1: 10 c...

**social studies**

In 1846, the population of San Francisco, California, was only 200. By 1852, the city's population was 36,000. Which contributed the most to San Francisco's population change? (5 points) The Gold Rush The Mexican-American War The Monroe Doctrine The Trail of Tears 2. P...

**Math**

How many fact families with a dividend under 100 contain only odd numbers

**Physics**

A golf ball is hit with an initial velocity of 15 meters per second at an angle of 35 degrees above the horizontal. What is the vertical component of the golf ball's initial velocity? a)8.6 m/s b)9.8 m/s c)12 m/s d)15 m/s I know you use 15cos 35 feta to solve the question ...

**Health**

Ok! Thanks sooo much I think thats all for now!

**Health**

Ok! A swimmer would like to his time in a 100 yard freestyle race. After talking to his coach, he intends to focus on one critical element at the begining of the race. The swimmer will try to improve his 100 yard freestyle time by improving his power of a recovery stroke react...

**Health**

Nevermind...Would you mind helping me with a few more?

**Health**

Thanks! Are you from connections?

**Health**

Devon and Hunter have been going to the local skateboard park for several weeks and learning new tricks on their skateboards. Some of the older skaters at the park have been giving them tips to be successful. To increase the amount of time Devon stays on the skateboard, he sho...

**Health**

Ok thank you!

**Health**

1 Select the skill-related component which is defined as the ability to perform a combination of movements with different parts of your body? A-Balance B-coordination*** C-power D-speed Please help! ASAP!

**Math please help hurry**

A submarine is travelling parallel to the surface of the ocean at a depth of 626m. It begins a constant ascent in order to reach the surface after travelling a distance of 4420m. The ascent takes 35mins. A.) what angle of ascent or angle of elevation would the submarine need t...

**Acid/Base Chemistry**

A 497 mL sample of 0.9960 M HI is mixed with 443 mL sample of KOH (which has a pH of 13.51). What is the pH of the resulting solution? What are the steps to solving this problem? I think you need to find the concentration of OH by taking 10^-pOH, and then do an ICE table from ...

**Geometry**

for each parallelogram find the measures of the angles formed by extending two adjacent side through their common vertex: angle is 90 degrees

**Math quick question**

Thank u so much:)

**Math quick question **

Create a system of linear equations with this situation: Megan considers two different car rental options. One option costs $19 per day plus $0.12 per kilometre . Another option costs $42.50 per day for unlimited kilometres . Thanks :)

**science**

An elevator in a high rise building accelerates and decelerates at the rate of 1 foot per second squared. Its maximum speed is 8 feet per second. It starts from rest, accelerates to its maximum speed and stays at that maximum speed until it approaches its destination where it ...

**Socials**

If in Napoleon Bonaparte's perspective, what was the best form of government did he want and why would this be good for the country(France)? Doing a project where you make a campaign trying to persuade people to vote for you(Napoleon) :) Thanks in advance!

**Physics -URGENT-**

A 2 kg mass accelerates at 5.7 m/s 2 in a direction 19◦ north of east. One of the two forces acting on the mass has a magnitude of 17.1 N and is directed north. Determine the magnitude of the second force. Answer in units of N

**To ms sue**

Can you please help me with my English , much appreciated

**English writing a concluding paragraph**

I have to write from specific to general in my concluding paragraph and can't have any contractions, no 1st person or second person , no rhetorical questions , no in conclusion, in summary, etc

**English writing a concluding paragraph**

My essay is about conformity and rebellion. I need a really good conclusion. My intro is this: In life there will be certain situations in which we will have to stay in order or choose to make our decisions ourselves. For example there will be times when conformity will strike...

**Math**

how do you write radicals as powers? please help me with the following question, I know the answer but I don't know HOW to get it. I must learn this so please help me. y5/3 is under the square root sign sorry I retyped this, but I made a mistake typing it before

**Math**

No wait let me re type the question: y5/3 is under the square root sign

**Math**

the ay was supposed to be a square root sign..

**Math**

how do you write radicals as powers? please help me with the following question, I know the answer but I don't know HOW to get it. I must learn this so please help me. ãy 5/3

**English, check my answers**

Oh thank you:)

**English, check my answers**

please check if I have put the apostrophes in the right places or if I have forgot to put them in certain places in these sentences: 1. My dog's been so sick lately. 2. We've been having lots of fun in science classes. 3. Why's the dog eating from the cats' dis...

**Chemisry**

6M HCl + 1M NaOH => NaCl + H2O If I'm understanding this correctly, all of the NaOH is used up because the molarity is 1 where the HCl's is 6 this leaves excess HCl correct?

**Algebra**

The deck around a swimming pool has the same width all the way around. The perimeter of the pool is 50m. The outside perimeter of the deck is 74m. What is the width of the deck

**Math**

if 3/5 of the class are boys and there are 12 more boys than girls. How many girls are there in the class?

**Physics**

An arrow is fired horizontally from the top of a 40.0-m vertical cliff and lands 125 m away. Therefore the arrow was fired at _____ m/s.

**Physics**

I don't understand.. could you give a better answer?

**Physics**

A car that was initially at rest reaches a final speed of +50.0 m/s over a displacement of +55.0 m. What is the magnitude of the acceleration? Find the time it took to travel the first 55 m.

**environment**

United Nations Environment Program Greenpeace

**chemistry**

enzymes convert glucose M=180.2 to ethanol M=46.1 according to the equation C6H12O6=2C2H5OH + 2CO2 what is the maximum mass of ethanol that can be made from 15.5 kg of glucose?

**math**

a company employs 12 gardeners at $26 per day , and 8 clerks at $17 per day. What is the mean daily wage,in dollars,of the 20 employees?

**math**

a man pays 60 cents for every 200m3 of gas used,plus a fixed charge of $13.75. How much does he pay when he uses 55 000m3 of gas?

**math**

simplify in radical form (x^-2/5)^1/4

**chemistry FP depression**

if I had to choose a solvent for a freezing point depression lab...would I choose Chloroform or Benzophenone? and why?

**chemistry**

if calculating molecular weight of unknown by freezing point depression...All of the unknowns in the activity were nonpolar organic molecules with molecular weight= 100-250 g/mol and using around 1g of the unknown. Provide an example of a solvent that could possibly be used fo...

**chemistry HELP**

if calculating molecular weight of unknown by freezing point depression...All of the unknowns in the activity were nonpolar organic molecules with molecular weight= 100-250 g/mol and using around 1g of the unknown. Provide an example of a solvent that could possibly be used fo...

**physics**

Thunderstorms can have an electric ﬁeld of up to 341 × 10 ^5 N/C. What is the magnitude of the electric force on an electron in such a ﬁeld? The fundamental charge is 1.6002 × 10^−19 C .

**Physics**

A coil with 347 turns of wire, a total resistance of 49 Ω, and a cross-sectional area of 0.28 m2 is positioned with its plane perpendicular to the ﬁeld of a powerful electromagnet. What average current is induced in the coil during the 0.31 s that the magnetic @...

**physics**

A ﬂat coil of wire consisting of 56 turns, each with an area of 39 cm^2, is positioned perpendicularly to a uniform magnetic ﬁeld that increases its magnitude at a constant rate from 3.1 T to 10 T in 5.7 s. If the coil has a total resistance of 0.56 Ω, what ...

**Math**

Is the equation sinx + cosx = 1 an identity? Why?

**Physics**

A series of pulses, each of amplitude 0.190 m, are sent down a string that is attached to a post at one end. The pulses are reflected at the post and travel back along the string without loss of amplitude. (a) What is the displacement at a point on the string where two pulses ...

**psychology**

The first year after the speed limit was reduced to 55 mph was the first year since there was a federal speed limit that no one in the United States who was observing the speed limit died in an auto accident. What does this prove?

**Psychology**

I know a man who read to his 5 children every night before they went to bed, and they all could read before entering preschool. Suppose that this were true of all children we could find who were read to every night before going to bed but true of only a few of those who were n...

**psychology**

For question #1, can you say that the two variables are positively correlated however, it doesn't mean that running regularly can cause one to lives longer. For question #2, are you saying that there are other variables that need to be considered?

**psychology**

1. A recent study confirms that people who run regularly, live longer. How can one explain that? 2. More retired people die each year than those who have not retired. Does this mean that delaying retirement will increase one's life expectancy? Explain.

**Psychology**

How could my wife and I find out whether the South Beach Diet works for us? Write the methods section for an experiment.

**psychology**

Here is what i come up with. will you see if it make sense? Recruit few random women from her age group. Randomly divided them into 2 groups Assign each group one of the bicycle. Let the two groups compete and see which group perform better.

**psychology**

A friend of mine finished fourth in her age group in the world duathlon (run, ride, run). She has two bicycles that differ along several variables, but she isn’t sure which one will be best for the next season. How could she find out? Write the methods section for an expe...

**psychology**

Suppose that you have developed three new kinds of hair shampoo, and you want to know how people's preference depends on their age. Design an experiment to find out.

**psychology**

What implications do the results of an experiment have for subjects that were not observed in the experiment?

**Math**

Use the discriminate to determine the number of real solutions of the equations. 7^2-2x+1

**Probability/Decision Analysis**

A manufacturer is trying to decide whether to build Building A or Building B. The profit per unit is $5. Building A gets an annual cost of $100,000 with a production capacity of 25,000 units each year. Building B gets an annual cost of $200,000 with a production capacity of 50...

**Statistics**

A brewery's filling machine is adjusted to fill bottles with a mean of 32.6 oz. of ale and a variance of 0.004. Periodically, a bottle is checked and the amount of ale noted. (a) Assuming the amount of fill is normally distributed, what is the probability that the next ran...

**H. CHemistry**

if the atmosphere can support a column of mercury 760 mm high at sea level, what height of a hypothetical liquid whose density is 1.40 times the density of mercury could supported?

**geometry**

a ladder is placed next to a building to get to the top. the bottom of the ladder is placed 7 feet away from the building at an angle of 56 degrees.how tall is the building?

**english**

What is the simple subject and simple predicate in sentence: The smell of cooking is delicious to the hungry campers.

**english**

What is the simple subject and simple predicate in the sentence: A good fire is difficult to build.

**math urgent**

i think it b c a

**Algebra 2**

Subract. Put the answer in the simplest form 9/x-4 - 5/x+4

**Math **

1. The total of 36, 78, 198, 475, and 620 is A. 2,109. B. 1,731. C. 1,187. D. 1,407. I say it's D 1407

**ok**

ok any body else thatcould anser this cuz i don't want to do my homework

**Math Help!**

is 10 000 more than 881 462 is 1000 000 less than 2 183 486 is 1 000 000 more than 746 000 is 1 000 000 less than 624 327 207

**governement**

I don't know

**governement**

citizens of a place?

**government**

set of land boundaries of a state?

**Algebra**

What is the rule in equation form of an input/output table if the inputs are 2 10 and 6 and the outputs are 2 6 and 4 ?

**physics**

a car traveling at 7 m/s accelerates to a velocity of 12.0 m/s in 2.0s. what is the acceleartion of the car?

**grade six math**

The anser is 7,555,131 its sooo easy

**math**

What is the value of the 3 in .ooo3?

**Math (cummulative review)**

Factor the given polynomial: 3y2+5y-8 the 2 is an exponent...

**English**

'How about painting the wall a new color?' is addressing one person asking a question to a seperate individual. 'How about we paint the wall a new color? is referring to the person asking the question who would like to help the individual with the painting.

**Health**

All of your points sound really good so far. I have another factor that you could add. E. Most likely to develop diabetes due to the result of not eating healthy

**Health**

'C' is the best answer out of all of them. I'd make 'B' a correct answer as well. Both of the liquids are healthy to drink.

**Fitness And Nutrition**

Well, let's go over it. 'A' is the plan that can be followed and used for a long period of time. 'B' is the plan that you have to go to a lot of stores to find one item. It would be tiring after a while. 'C' is the plan that in 1 week you lose, let&...

**chemistry**

How Many H bonds in Oblate Polyhedra?

**trigonometry**

write 2=5cis 11pie/6 in standard form.

**trigonometry**

find the dot product of u=2i-7j and v=i+8j

**trigonometry**

given v=5i+3j and w=-4i+8j, find projwv

**trig**

find the single term of cos^2 4theta - sin^2 4theta

**trig**

find the period of f(x)=-2cot x/5

**Chem**

Okay I got the second pH w/HCl and it is 2.23. but still can't find the pH of both of the ones w/HC2H3O2. Please help?

**Chem**

Complete the table below: Note: Make simplifying assumptions, do not use the quadratic formula. What is the pH of the solution created by combining 1.90 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? mL NaOH: 1.90 pH w/HCl...

**algebra**

(6x-2y)/(x^2+xy-2y^2)-(3x+2y)/(x^2+3xy-4y^2)

**Basic Dressmaking Processes**

A Correct 2. D Correct 3. B Correct 4. A C PAGE 6 5. A Correct 6. D Correct 7. C Correct 8. B Correct 9. C Correct 10. D Correct 11. C Correct 12. C Correct 13. A Correct 14. B Correct 15. D Correct 16. C Correct 17. A Correct 18. A Correct 19. B Correct 20. B Correct

**Math**

If you're rolling two dice, what is the probability that the sum of two dice is a 7?

**math**

i try and try to practice for my checkpoints but i keep on failing in them!!!!!!!!!!! what can i do to improve in maths,science and english. please help me practice. I was hoping you could give me the real checkpoint papers for all subjects!! thatcwould be amazing then i'l...

**english**

I'm writing a english paper about A Tale of Two Cities to show why/how the topic of law/corruption/power matters from the way Dickens uses it in the text. I am trying to write my intro, but I am having trouble. All I have so far is an attention-getter, a quote. Here is the...

**Chemistry**

Thank you so much! Not I dont think I will fail my test tomorrow!

**Science**

you are to make a buffer of pH = 4.33 using HNO2 and NaNO2 what ratio of NO2- to HNO2 is required?

**math**

The diameter of each tire on Niki's bike is 66 centimeters (cm). It takes her 16 minutes to ride 10 kilometers (km). How fast did Niki ride, in kilometers per hour?

**11th grade math**

A farmer wants to fence in 60 000m^2 of land in a rectangular field along a straight road. The fencing that he plans to use along the road is $10 per meter and the fencing that he plans to use for the other three sides costs $5 per meter. a) How much of each type of fence shou...

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